EP3783398A1 - Transferfolie mit diffraktionsstruktur und medium zur verhinderung von fälschungen damit - Google Patents

Transferfolie mit diffraktionsstruktur und medium zur verhinderung von fälschungen damit Download PDF

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Publication number
EP3783398A1
EP3783398A1 EP20201739.8A EP20201739A EP3783398A1 EP 3783398 A1 EP3783398 A1 EP 3783398A1 EP 20201739 A EP20201739 A EP 20201739A EP 3783398 A1 EP3783398 A1 EP 3783398A1
Authority
EP
European Patent Office
Prior art keywords
diffraction structure
layer
structure forming
diffracted
reflective layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20201739.8A
Other languages
English (en)
French (fr)
Inventor
Hidetaka Ide
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toppan Inc
Original Assignee
Toppan Printing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toppan Printing Co Ltd filed Critical Toppan Printing Co Ltd
Publication of EP3783398A1 publication Critical patent/EP3783398A1/de
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/324—Reliefs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • B42D25/465—Associating two or more layers using chemicals or adhesives
    • B42D25/47—Associating two or more layers using chemicals or adhesives using adhesives
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1814—Diffraction gratings structurally combined with one or more further optical elements, e.g. lenses, mirrors, prisms or other diffraction gratings
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/0005—Adaptation of holography to specific applications
    • G03H1/0011—Adaptation of holography to specific applications for security or authentication
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
    • G03H1/024—Hologram nature or properties
    • G03H1/0244—Surface relief holograms
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
    • G03H1/0252—Laminate comprising a hologram layer
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
    • G03H1/0252—Laminate comprising a hologram layer
    • G03H1/0256—Laminate comprising a hologram layer having specific functional layer
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
    • G03H2001/2605—Arrangement of the sub-holograms, e.g. partial overlapping
    • G03H2001/261—Arrangement of the sub-holograms, e.g. partial overlapping in optical contact
    • G03H2001/2615—Arrangement of the sub-holograms, e.g. partial overlapping in optical contact in physical contact, i.e. layered holograms
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2250/00—Laminate comprising a hologram layer
    • G03H2250/10—Laminate comprising a hologram layer arranged to be transferred onto a carrier body
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2250/00—Laminate comprising a hologram layer
    • G03H2250/36—Conform enhancement layer
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2250/00—Laminate comprising a hologram layer
    • G03H2250/40—Printed information overlapped with the hologram

Definitions

  • the invention has been made to solve the problem, and an object thereof is to provide diffraction structure transfer foil capable of easily making an authenticity determination, and a forgery prevention medium using the same. More specifically, an object of the invention is to provide a diffraction structure transfer foil that further improves usefulness of the diffraction structure transfer foil in authenticity determination by allowing a greater variety of diffracted-light patterns to be observed, enables a sense of vision of human beings to grasp characteristics of a high visual effect provided to a diffraction structure without a variation in the visual effect, and allows an authenticity determination to be easily made, and a forgery prevention medium using the diffraction structure transfer foil.
  • FIG. 1 is a cross-sectional view of diffraction structure transfer foil 21 according to a first embodiment of the invention.
  • the diffraction structure transfer foil 21 includes a transfer foil substrate 1, and a peeling-off protective layer 2, a first diffraction structure forming layer 3, a first reflective layer 5a, a second diffraction structure forming layer 6, a second reflective layer 8a, and an adhesive layer 9 which are laminated on one surface (a surface on a lower side in FIG. 1 ) of the transfer foil substrate 1 in this order.
  • Relieves 4 and 7, which are obtained due to minute concavity and convexity, are partially formed in the first diffraction structure forming layer 3 and the second diffraction structure forming layer 6 through embossing processing.
  • the second reflective layer 8 of which a transmission density is 1.0 or greater includes four elliptical shapes and two O-shapes having the same shape as the O-shape of the first reflective layer 5.
  • the four elliptical shapes are formed at positions which do not overlap with the four O-shapes of the first reflective layer 5, and the two O-shapes of second reflective layer 8 are formed to be aligned to two O-shapes on a lower stage side among the O-shapes of the first reflective layer 5 which are formed in two stages on an upper side and on a lower side in FIG. 13 .
  • the O-shaped portion is observed with a gray color (intermediate dense in FIG. 15 ). Furthermore, four elliptical portions as the second reflective layer 8, and two O-shaped portions on a lower stage are observed to be dark (most densely in FIG. 15 ) because a transmission density is 1.0 or greater and transmitted light is almost shielded. Furthermore, reflected light or diffracted light due to the relief 4 or the relief 7 are not observed under the back light.
  • the forgery prevention medium 32 according to the second example of the invention is manufactured as follows. That is, after the diffraction structure transfer foil is transferred to the substrate 12 to be transferred, the transfer foil substrate 1 is peeled off.
  • the forgery prevention medium 33 according to the third example of the invention is manufactured as follows. That is, after the diffraction structure transfer foil is transferred to the substrate 12 to be transferred, the transfer foil substrate 1, which is a support body of the diffraction structure transfer foil, is peeled off.
  • multi-layer paper in which at least a part of a site to which the diffraction structure transfer foil is transferred is transparent for example, paper, in which a transparent film is fed into a paper layer to provide a transparent window portion without the paper layer and a transparent film portion is exposed, and the like are used.
  • the peeling-off protective layer 2 is laminated on one surface of the transfer foil substrate 1.
  • a material obtained by adding a lubricant to a resin can be used as the peeling-off protective layer 2.
  • the resin for example, a thermoplastic resin, a thermosetting resin, a moisture-curable resin, an ultraviolet-curable resin, an electron beam-curable resin, and the like can be used.
  • the resin include an acrylic resin, a polyester resin, and a polyamideimide resin.
  • the lubricant for example, a polyethylene powder, and wax such as CARNAUBA WAX can be used.
  • the lubricant is formed by a known application method such as a gravure printing method and a micro-gravure method.
  • thermoplastic resin examples include a thermoplastic resin, a thermosetting resin, an ultraviolet or electron beam-curable resin, and the like.
  • thermoplastic resin examples include an acrylic resin, an epoxy-based resin, a cellulose-based resin, a vinyl-based resin, and the like.
  • a cross-linked urethane resin obtained by adding polyisocynate, as a crosslinking agent, to acrylic polyol, polyester polyol, and the like which have a reactive hydroxyl group, a melamine-based resin, a phenolic resin, and the like can be used.
  • a second method is a method in which vacuum film formation is performed in a state in which a mask having an opening in a pattern shape of a character or an image is superimposed on the reflective layers to form the reflective layers in the pattern shape of the mask.
  • a resin layer which is easily peeled off, is provided in a negative pattern shape.
  • a reflective layer which is uniform over the entire surface, is formed to cover the resin layer, and is compressed to, for example, a sticking roll, sticking paper, and the like to remove the reflective layer by transferring the reflective layer to the sticking roll, the sticking paper, and the like in the negative pattern shape.
  • the reflective layer remains in an image pattern shape, and thus the first reflective layer 5 or the second reflective layer 8 is obtained.
  • a photosensitive resin layer is formed on a reflective layer that is formed uniformly over the entire surface, and is exposed and developed into an image pattern shape. Then, an alkali or acidic etchant is applied so as to dissolve and remove an exposed portion of the reflective layer. According to this, the first reflective layer 5 and the second reflective layer 8 are obtained. Even in this case, the remaining photosensitive resin layer may be allowed to remain so as to use the photosensitive resin layer as a protective layer provided with chemical resistance.
  • the adhesive layer 9 may be constituted by, for example, a material that adheres to a surface of the substrate 12 to be adhered due to pressure or heat and pressure.
  • a heat-sensitive adhesive material, a heat-sensitive sticking material, and the like, which are known in the related art, may be used.
  • a diffracted-light delivery angle for example, the diffracted-light delivery angle ⁇
  • a diffracted-light delivery angle ⁇ of any one of the first diffraction structure forming layer 3 and the second diffraction structure forming layer 6 is in a range of 1° to 45°
  • a diffracted-light delivery angle for example, the diffracted-light delivery angle ⁇ of the other diffraction structure forming layer is in a range of 45° to 89°.
  • the "diffracted-light delivery angle ⁇ of the first diffraction structure forming layer 3" corresponds to a diffracted-light delivery angle in a first diffraction structure forming portion, in which a first diffraction structure (relief 4) is formed, of the double-sided diffraction structure forming layer 11.
  • the "diffracted-light delivery angle ⁇ of the second diffraction structure forming layer 6" corresponds to a diffracted-light delivery angle in a second diffraction structure forming portion, in which a second diffraction structure (relief 7) is formed, of the double-sided diffraction structure forming layer 11.
  • an aluminum deposition film was formed in advance in a unit of 5 nm in a film thickness range of 5 nm to 100 nm before execution of Example 1, and the visible-light transmission density of each of the aluminum deposition films was measured, and a relationship between the film thickness and the visible-light transmission density was converted into a numerical value. According to the pre-evaluation, when the thickness of the aluminum deposition film was 10 nm, the transmission density was 0.56, and thus the transmission density of the first reflective layer 5 having a film thickness of 10 nm becomes 0.56.
  • an application solution composed of the following composition was applied to the peeling-off protective layer 2 and was dried to form the first diffraction structure forming layer 3 having a film thickness of 2 ⁇ m. Then, a press plate configured to form a diffraction structure was transferred to the first diffraction structure forming layer 3 through hot pressing by using a roll embossing method to form the relief 4 on a surface.
  • this value was set as a representative value of the thickness of the aluminum deposition film.
  • an aluminum deposition film was formed in advance in a unit of 5 nm in a film thickness range of 5 nm to 100 nm before execution of Example 2, and the visible-light transmission density of each of the aluminum deposition films was measured, and a relationship between the film thickness and the visible-light transmission density was converted into a numerical value. According to the pre-evaluation, when the thickness of the aluminum deposition film was 14 nm, the transmission density was 0.98, and thus the transmission density of the first reflective layer 5 having a film thickness of 14 nm becomes 0.98.
  • the forgery prevention medium 32 that was obtained, even in a front surface and a rear surface, the same reflected light and diffracted-light patterns as in the forgery prevention medium 31 were observed under a front light environment. Furthermore, in the forgery prevention medium 32, when the front surface was lightened with a light source from a rear side under a back light environment, characters of "10000" of the second reflective layer 8 having a transmission density of 3.9 was observed in a black color over the first reflective layer 5 having a transmission density of 0.98.
  • an application solution composed of the following composition was applied to the peeling-off protective layer 2 and was dried to form the first diffraction structure forming layer 3 having a film thickness of 2 ⁇ m. Then, a press plate configured to form a diffraction structure was transferred to the first diffraction structure forming layer 3 through hot pressing by using a roll embossing method to form the relief 4 on a surface.
  • the second diffraction structure forming layer 6 having a film thickness of 2 ⁇ m was formed by using an application solution having the same composition as that of the first diffraction structure forming layer 3 and a processing method with the same sequence, and the relief 7 having a diffraction structure was formed at a position that overlapped an elliptical pattern in a portion in which the first reflective layer 5 was formed.
  • a mask plate having an opening in a character shape of "10000" was superimposed on the second diffraction structure forming layer 6, and aluminum deposition processing was performed by a vacuum deposition method to form the second reflective layer 8 including a character pattern of "10000" in a film thickness of 70 nm.
  • the transmission density measurement performed in advance when the thickness of the aluminum deposition film was 70 nm, the transmission density was 3.9, and thus the transmission density of the second reflective layer 8 of Example 3 becomes 3.9.
  • the forgery prevention medium 33 that was obtained, even in a front surface and a rear surface, the same reflected light and diffracted-light patterns as in the forgery prevention media 31 and 32 prepared in Example 1 and Example 2 were observed under a front light environment. Furthermore, in the forgery prevention medium 33, when the front surface was lightened with a light source from a rear side under a back light environment, characters of "10000" of the second reflective layer 8 having a transmission density of 3.9 was observed in a black color over the first reflective layer 5 having an elliptical shape and a transmission density of 0.98. In addition, when lightening the forgery prevention medium 33, it was observed that positions of three patterns of the relief 7, the second reflective layer 8, and the first reflective layer 5 match each other. According to this, it could be seen that the forgery prevention medium was capable of easily making an authenticity determination on an advanced forgery prevention technology.
  • a diffraction structure on which a diffraction lattice pattern is recorded, has been widely used as the forgery prevention means from the viewpoints that it is possible to determine authenticity at first glance by attaching the diffraction structure to an article (forgery prevention article), and handling thereof is also easy.
  • the diffraction structure that is employed as the forgery prevention means include a diffraction structure that is configured as transfer foil by sequentially laminating a detachable peeling-off layer, a diffraction structure forming layer in which a diffraction lattice is formed, a reflective layer having metallic glossy, and an adhesive layer on a substrate (for example, refer to PTL 1).
  • the plurality of diffraction structure forming layers are laminated, but the diffracted light may be observed only from one surface of the diffraction structure in some cases.
  • the authenticity determination method includes only confirmation of the diffracted-light pattern, and thus there is a problem that forgery by a pattern that resembles the diffracted light is easy.
  • the diffraction structure transfer foil 21 to the diffraction structure transfer foil 25 realize the authenticity determination with transmitted light in addition to reflected light and diffracted light, and makes forgery more difficult through a combination of a complicated and minute structure and accurate optical characteristics.
EP20201739.8A 2014-05-13 2015-05-13 Transferfolie mit diffraktionsstruktur und medium zur verhinderung von fälschungen damit Pending EP3783398A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2014099883 2014-05-13
EP15792122.2A EP3144707B8 (de) 2014-05-13 2015-05-13 Transferfolie mit diffraktionsstruktur und medium zur verhinderung von fälschungen damit
PCT/JP2015/002433 WO2015174089A1 (ja) 2014-05-13 2015-05-13 回折構造転写箔とそれを用いた偽造防止媒体

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP15792122.2A Division-Into EP3144707B8 (de) 2014-05-13 2015-05-13 Transferfolie mit diffraktionsstruktur und medium zur verhinderung von fälschungen damit
EP15792122.2A Division EP3144707B8 (de) 2014-05-13 2015-05-13 Transferfolie mit diffraktionsstruktur und medium zur verhinderung von fälschungen damit

Publications (1)

Publication Number Publication Date
EP3783398A1 true EP3783398A1 (de) 2021-02-24

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Family Applications (2)

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EP15792122.2A Active EP3144707B8 (de) 2014-05-13 2015-05-13 Transferfolie mit diffraktionsstruktur und medium zur verhinderung von fälschungen damit
EP20201739.8A Pending EP3783398A1 (de) 2014-05-13 2015-05-13 Transferfolie mit diffraktionsstruktur und medium zur verhinderung von fälschungen damit

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Application Number Title Priority Date Filing Date
EP15792122.2A Active EP3144707B8 (de) 2014-05-13 2015-05-13 Transferfolie mit diffraktionsstruktur und medium zur verhinderung von fälschungen damit

Country Status (7)

Country Link
US (1) US9827804B2 (de)
EP (2) EP3144707B8 (de)
JP (1) JPWO2015174089A1 (de)
KR (1) KR101858379B1 (de)
CN (1) CN106415338B (de)
DE (1) DE112015002233B4 (de)
WO (1) WO2015174089A1 (de)

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EP2974879B1 (de) * 2013-03-12 2018-09-05 Toppan Printing Co., Ltd. Anzeigeelement
JP6219992B2 (ja) 2016-02-09 2017-10-25 日本写真印刷株式会社 立体感のある金属調意匠を持つ加飾シート及びその製造方法
WO2017159636A1 (ja) * 2016-03-14 2017-09-21 凸版印刷株式会社 回折構造形成体、回折構造形成体付き物品、および、回折構造形成体の製造方法
DE102016116748A1 (de) 2016-09-07 2018-03-29 Osram Opto Semiconductors Gmbh Diffraktives optisches element und verfahren zu seiner herstellung
US10996482B2 (en) 2016-09-07 2021-05-04 Osram Oled Gmbh Optically effective element, method of producing an optically effective element, and optoelectronic component
KR101916064B1 (ko) 2016-10-13 2018-11-07 현대자동차 주식회사 차량용 변속장치
FR3062546B1 (fr) * 2017-02-01 2021-09-10 Inst Vedecom Structure de diffraction integree dans une carte de circuit imprime et procede de fabrication de celle-ci
JP7115473B2 (ja) * 2017-05-25 2022-08-09 凸版印刷株式会社 情報記録媒体、ラベル、カード、および真贋判定方法
DE102018005447A1 (de) * 2018-07-09 2020-01-09 Giesecke+Devrient Currency Technology Gmbh Optisch variables Sicherheitselement mit reflektivem Flächenbereich

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Publication number Priority date Publication date Assignee Title
JPS61190369A (ja) 1985-02-20 1986-08-25 Toppan Printing Co Ltd ホログラム転写箔
JPH0154709B2 (de) 1985-02-20 1989-11-20 Totsupan Insatsu Kk
JPH07199781A (ja) 1993-12-28 1995-08-04 Toppan Printing Co Ltd ホログラム転写箔
JP2006306085A (ja) * 2005-03-31 2006-11-09 Dainippon Printing Co Ltd 光輝性フィルム、及びそれを用いた光輝性図柄形成物
US20140002873A1 (en) * 2008-04-04 2014-01-02 Leonhard Kurz Stiftung & Co. Kg Security Element and Method for Producing a Security Element

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CN106415338B (zh) 2019-11-01
EP3144707B8 (de) 2021-01-13
US20170028762A1 (en) 2017-02-02
DE112015002233B4 (de) 2019-12-24
DE112015002233T5 (de) 2017-02-23
EP3144707A4 (de) 2018-01-10
KR20160132968A (ko) 2016-11-21
US9827804B2 (en) 2017-11-28
KR101858379B1 (ko) 2018-05-15
JPWO2015174089A1 (ja) 2017-04-20
WO2015174089A1 (ja) 2015-11-19
EP3144707B1 (de) 2020-11-18
CN106415338A (zh) 2017-02-15
EP3144707A1 (de) 2017-03-22

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